A boy and a girl are sitting on the porch.
"I'm a boy," says the child with black hair.
"I'm a girl," says the child with red hair.
If at least one of them is lying, who is which?

A man is found unconscious in front of a store at two in the morning. His head is bleeding and there’s a brick laying next to him. When the police arrive, they carry the man to jail. Why did they arrest him?

Can you find out what is missing?

1 3 5
2 4 ?

Hint: It's not six. Think out of the box.

What goes up but never comes down?

Is the statement valid that it does not matter how much older a sibling is, eventually the younger one will be half as old as the older one?

A man dies of old age on his 25 birthday. How is this possible?

Count the number of triangles in the below picture?

Replace the question mark in the picture below.

Can you figure out the logic I used to decide the order of the following words:
gun, shoe, spree, door, hive, kicks, heaven, gate, line, den

I have no life, but I can die. What am I?